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A particle is moving with uniform acceleration along a straight line. The average velocity of the particle from P to Q is 8 m s to the power of negative 1 end exponent and that from Q to Sis 12 m s to the power of negative 1 end exponent. If Q S minus P Q, then the average velocity from P to S is

  1. 9.6 m s to the power of negative 1 end exponent  
  2. 12.87blank m s to the power of negative 1 end exponent  
  3. 64 m s to the power of negative 1 end exponent  
  4. 327blank m s to the power of negative 1 end exponent  

The correct answer is: 9.6 m s to the power of negative 1 end exponent


    Average velocity equals fraction numerator 2 cross times 8 cross times 12 over denominator 8 plus 12 end fraction m s to the power of negative 1 end exponent equals 9.6 m s to the power of negative 1 end exponent

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